1. 點擊界面收回鍵盤：
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{//點擊空白處收回鍵盤
if ([phoneNumberTF isFirstResponder]) {
[phoneNumberTF resignFirstResponder];
}
if ([passwordTF isFirstResponder]) {
[passwordTF resignFirstResponder];
}
}
2. 鍵盤 keyboard Type對應界面：
